Sensitivity of Plasmodium falciparum to chloroquine and sulfadoxine/pyrimethamine in Nigerian children.
Ekanem OJ, Weisfeld JS, Salako LA, Nahlen BL, Ezedinachi EN, Walker O, Breman JG, Laoye OJ, Hedberg K.
Bull World Health Organ. 1990. 68(1):45-52. PMID: 2189585